diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp
index 04ca97c..9b1e184 100644
--- a/src/wallet/wallet2.cpp
+++ b/src/wallet/wallet2.cpp
@@ -11796,8 +11796,8 @@ uint64_t wallet2::get_upper_transaction_weight_limit()
 {
   if (m_upper_transaction_weight_limit > 0)
     return m_upper_transaction_weight_limit;
-  uint64_t full_reward_zone = use_fork_rules(2, 10) ? CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V5 : CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V1;
-  if (use_fork_rules(2, 10))
+  uint64_t full_reward_zone = use_fork_rules(2, 0) ? CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V5 : CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V1;
+  if (use_fork_rules(2, 0))
     return full_reward_zone / 2 - CRYPTONOTE_COINBASE_BLOB_RESERVED_SIZE;
   else
     return full_reward_zone - CRYPTONOTE_COINBASE_BLOB_RESERVED_SIZE;